What baseboard to use with laminate floors?

I'm installing my laminate floors right now and I just realized the gap that the instructions say to leave is more than the width of the baseboards I was going to use. I have already used the baseboards elsewhere and was hoping to keep it uniform. Is the only solution to use quarter rounds at the bottom of my baseboard or will the floor actually expand and fill in those gaps? Is it bad to undercut the suggested gaps for your floor?

My baseboard is 10cm and the instructions say to leave 11-15mm gaps. So far I've been going with the lower end of the scale.